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Alan Turing’s secret Enigma Code notes found in Bletchley Park

Alan Turing’s secret Enigma Code notes found in Bletchley Park

Notes secretly compiled by Alan Turing during World War Two have been found.

The series of notes compiled by the gay computer science genius have been found used as roof insulation in an out building at Bletchley Park, which was the place where Turing broke the Nazi’s Engima Code.

‘Discovering these pieces of code-breaking ephemera is incredibly exciting and provides yet more insight into how the codebreakers worked,’ said Ian Stander, chief executive of the Bletchley Park Trust.

‘The fact that these papers were used to block draughty holes in the primitive hut walls reminds us of the rudimentary conditions under which these extraordinary people were working.’

Due to wartime rules, all evidence of the codebreaking process was meant to be destroyed. This means these notes are the only known example of what happened.

‘These are the actual documents used by codebreakers, and in terms of the codebreaking process they are pivotal,’ said Gillian Mason, a curator at Bletchley Park.’I can just see these people beavering away. There is a lot of pencil and crayon activity.’

It comes as a notebook of Turing, left to his friend, is set to go to auction and is expected to sell for seven figure.